ANALYSIS OF THE NATURAL ORDERS. 11 



C. COHORT 3. APETALOUS EXOGENS. 



I Plants herbaceous, the flowers not in aments (except numulue, 115).. (8) 

 | Plants woody, shrubs or trees. .(8) 



"N2 Flowers with a regular calyx (or a calyx-like involucre). . (3) 

 2 Flowers achlamydeous, neither calyx nor corolla. . (k) 

 ^ 3 Calyx tube adherent to the ovary, limb lobed, toothed, or entire (I) 

 ^ 3 Calyx free from the ovary, sometimes enclosing it.. (4) _ . 

 ^4 Ovaries several, entirely distinct, each 1-styled, l-ovulcd..(0r) 

 4 Ovary 1 only, simple or compound.. (5) 

 5 Style or stigma 1 only..(fi) 

 5 Styles or stigmas 2 12.. (7) 



G Ovary 1-ovuled, bearing but 1 seed, .(c) 

 6 Ovary many-ovuled, bearing many seeds.. (rf) 

 7 Ovary 1-3-ovuled, 1-3-seeded. .(e) 



I Ovary 4- CO-ovuled, 4- CO-seeded. .(h) 



8 Flowers not in aments, with the leaves opposite .. (ri) 



8 Flowers not in aments, with the leaves alternate.. (10) 



8 Flowers imperfect, the sterile only in aments.. (v) 



8 Flowers imperfect, both the fertile and sterile in aments. .(a;) 

 9 Stamens 1 12, as many or twice as many as the stigmas.. (a) 

 9 Stamens 2 10, not symmetriial with the 1 or 2 stigmas.. (6) 



10 Style or stigma 1. Fruit 1-seeded. . (11) 



10 Styles or stigmas 2. .(s) 



10 Styles or stigmas 3 9. . (() 



II Calyx free from the ovary, .(p) 

 11 Calyx adherent to the ovary. . (;) 



a btigmas and cells of the ovary 1 4. Stamens 1 8 OKDEES 43, or 54 



a Stigmas and cells of the ovary 6. Stamens 6 or 12. . .ARISTOLOCHIACEJE. 102 



b Styles 2. Ovary many-seeded. Stamens 810 ORDER 45 



b Style 1. Ovary 1- or 2-seeded. Stamens 5 SANTALACEJE. 110 



c Flowers perfect. Calyx 4-lobed. Stamens 1 4 ORDER 44 



c Flowers perfect. Calyx entire, funnel-shaped, colored.. NYCTAGINACE^E. 101 



C Flowers diclinous. Calyx 4-5-parted, green URTICAOE^. 115 



d Stamens 4, opposite to the 4 sepals. Leaves numerous ORDER 53 



d Stamens 4, opposite to the 4 sepals. Leaves about 6 ORDER 145 



d Stamens 5, alternate with the 5 sepals ORDER 81 



d Stamens GO. Leaves large and showy. Cultivated ORDER 9 



e Fruit 8-(rarely 6-)seeded, with 3 (often cleft) styles EUPHORBIACE^E. 113 



e Fruit 1-seeded. Stipules sheathing the stems POLYGONACE^:. 104 



Fruit 1-celled, mostly 1-seeded. Stipules none. . (/) 



/ Calyx with scarious bractlets outside. AMARANTACE^:. 107 



f Calyx naked (double in 1 genus). Lvs. alternate.. CIIENOPODIAE,E. ICG 



. / Calyx naked. Leaves opposite ORDER 19 



^g Stamens hypogynous on the torus ORDER 1 



g Stamens perigynous on the calyx ORDER 44 



h Leaves opposite. Fruit circumscissile, a pyxis ORDER 61 



h Leaves opposite. Fruit 4-5-valved, a capsule ORDER 19 



h Leaves alternate . . (i) 



i Fruit 5-horned, 5-celled, a capsule ORDEU 46 



i Fruit a fleshy 4-10-seeded berry .PHYTOLACCACE^E. 105 



i Fruit circumscissile, a utricle AMARANTACE.<. 107 



t Flowers on a ppadix with a spathe. Monocotyledons ORDER 130 



k Flowers in a long naked spike. Stamens 6 or 7 SAURUBACR<E. 115 



k Flowers solitary, axillary, minute. Aquatic plants . . (m) 



